Process and device for the surface treatment of a substrate by electrical discharge between two electrodes in a gaseous mixture
CA 2253082 A1 · Owner: Martens, Bernd · Inventors: Martens, Bernd; Prinz, Eckhard; Cocolios, Panayotis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Device for the surface treatment of a substrate (3) by electrical discharge between two electrodes in a gaseous mixture able to generate byproducts (for example powders) able to be deposited on the electrodes in which one (9) of the electrodes is a roller on which the substrate can be applied means having been provided to place the roller and substrate in rotation and inject the gaseous mixture between the electrodes the device being remarkable in that the second electrode is an electrode roller (11) on which the substrate in movement can also be applied and which is placed parallel to the other roller (9) at an appropriate interval. Through this placement the substrate (3) protects each …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.